Trying to apply updates, dnf update returns Status code: 404 for http://r.vestacp.com/cmmnt/8/x86_64/repodata/repomd.xml
You could do
sudo dnf --enablerepo=* clean all to remove all cached data about repositories.
That might give you access to different, functional mirrors.
Thanks. That resolved it. Not sure where the old references came from…